package com.mydemo.likedy.interceptor;
import com.mydemo.likedy.Constant.JwtClaimsConstant;
import com.mydemo.likedy.Utils.JwtUtils;
import com.mydemo.likedy.holder.UserHolder;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpServletRequest;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import com.mydemo.likedy.properties.UserJwtProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

@Slf4j
@Component
public class JwtUserInterceptor implements HandlerInterceptor {
    @Autowired
    UserJwtProperties userJwtProperties;
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        {
            //判断当前拦截到的是Controller的方法还是其他资源
            if (!(handler instanceof HandlerMethod)) {
                //当前拦截到的不是动态方法，直接放行
                return true;
            }

            //1、从请求头中获取令牌
            String token = request.getHeader(userJwtProperties.getUserTokenName());

            //2、校验令牌
            try {
                String uri=request.getRequestURI();
                String param=request.getQueryString();
                log.info("路径{},参数{}",uri,param);
                log.info("jwt校验:{}", token);
                Claims claims = JwtUtils.parseJWT(userJwtProperties.getUserSecretKey(), token);
                Long userId = Long.valueOf(claims.get(JwtClaimsConstant.USER_ID).toString());
                log.info("当前id：{}", userId);


                // TODO
                /**
                 *
                 * 需要重写拦截后用户的错误信息
                 */
                UserHolder.set(userId);
                //3、通过，放行
                return true;
            } catch (Exception ex) {
                //4、不通过，响应401状态码
                response.setStatus(401);
                return false;
            }
        }
    }
}
